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BK-7 Biconvex Lenses

BK-7 Biconvex Lenses


Symmetrical biconvex lenses are most useful when dealing with finite conjugate points. This makes them ideal for 1:1 imaging applications or for use in multi-element systems.

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D (mm)f (mm)tc (mm)te (mm)fb (mm)r (mm)Centration (arcmin)Surface QualityMaterialCoatingFocal Length toleranceClear Aperture (%)Diameter toleranceThickness toleranceDesign WavelengthBevel
5.06.42.51.55.66.23≤ 340 - 20BK7none±2%≥ 90+0, -0.1mm±0.15mm546.10.2mm x 45° typical
5.06.42.51.55.66.23≤ 340 - 20BK7BMAR 425-675nm±2%≥ 90+0, -0.1mm±0.15mm546.10.2mm x 45° typical
5.08.42.11.47.68.30≤ 340 - 20BK7none±2%≥ 90+0, -0.1mm±0.15mm546.10.2mm x 45° typical
5.08.42.11.47.68.30≤ 340 - 20BK7BMAR 425-675nm±2%≥ 90+0, -0.1mm±0.15mm546.10.2mm x 45° typical
5.010.31.91.39.710.38≤ 340 - 20BK7none±2%≥ 90+0, -0.1mm±0.15mm546.10.2mm x 45° typical
5.010.31.91.39.710.38≤ 340 - 20BK7BMAR 425-675nm±2%≥ 90+0, -0.1mm±0.15mm546.10.2mm x 45° typical
5.012.31.71.211.712.46≤ 340 - 20BK7none±2%≥ 90+0, -0.1mm±0.15mm546.10.2mm x 45° typical
5.012.31.71.211.712.46≤ 340 - 20BK7BMAR 425-675nm±2%≥ 90+0, -0.1mm±0.15mm546.10.2mm x 45° typical
5.015.31.61.214.715.57≤ 340 - 20BK7none±2%≥ 90+0, -0.1mm±0.15mm546.10.2mm x 45° typical
5.015.31.61.214.715.57≤ 340 - 20BK7BMAR 425-675nm±2%≥ 90+0, -0.1mm±0.15mm546.10.2mm x 45° typical

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